Sallos is a mighty Great Duke of Hell, ruling thirty legions of demons. Among the demons of the Ars Goetia, he is seen as one of the more benevolent ones, for he is of a pacifist nature, and causes men to love women and women to love men.
He is depicted as a gallant and handsome soldier, with hair that takes turns changing from black to orange and back and gives off an aura that changes from gold to silver respectively. It is said that occasionally he will appear as a "floating head", with his body being invisible. He is also depicted wearing a ducal crown, and riding a crocodile.